Behrooz A. Akbarnia, MD, Clinical Professor, Department of Orthopedic Surgery, University of California, San Diego, President, San Diego Spine Foundation, San Diego, CA, USA George H. Thompson, MD, Professor, Department of Orthopedic Surgery and Pediatrics, Case Western Reserve University, Director of Pediatric Orthopedic Surgery, Rainbow Babies and Children's Hospital, Cleveland, OH, USA Muharrem Yazici, MD, Professor, Department of Orthopedic Surgery, Hacettepe University, Ankara, Turkey Ron ElHawary, MD, MSc, FRCS(C), Professor of Surgery (Orthopedics and Neurosurgery), Dalhousie University, Chief of Pediatric Orthopedics, IWK Health Centre, Halifax, NS, Canada